IPv4 Subnet Calculator
Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.
private IP (RFC 1918)10.32.0.0/13
network10.32.0.0/13
broadcast10.39.255.255
first host10.32.0.1
last host10.39.255.254
subnet mask255.248.0.0
wildcard0.7.255.255
addresses524,288
usable hosts524,286
classA
ipcalc 10.32.0.0/13
address00001010.00100000.00000000.00000000
subnet mask11111111.11111000.00000000.00000000
network00001010.00100000.00000000.00000000
broadcast00001010.00100111.11111111.11111111
green = network part, grey = host part
hex0x0a200000
decimal169869312
reverse dns0.0.32.10.in-addr.arpa
ipv4-mapped::ffff:a20:0
/13 split into /20 · 128 subnets
close ×| # | network | host range | broadcast |
|---|---|---|---|
| 1 | 10.32.0.0/20 | 10.32.0.1 – 10.32.15.254 | 10.32.15.255 |
| 2 | 10.32.16.0/20 | 10.32.16.1 – 10.32.31.254 | 10.32.31.255 |
| 3 | 10.32.32.0/20 | 10.32.32.1 – 10.32.47.254 | 10.32.47.255 |
| 4 | 10.32.48.0/20 | 10.32.48.1 – 10.32.63.254 | 10.32.63.255 |
| 5 | 10.32.64.0/20 | 10.32.64.1 – 10.32.79.254 | 10.32.79.255 |
| 6 | 10.32.80.0/20 | 10.32.80.1 – 10.32.95.254 | 10.32.95.255 |
| 7 | 10.32.96.0/20 | 10.32.96.1 – 10.32.111.254 | 10.32.111.255 |
| 8 | 10.32.112.0/20 | 10.32.112.1 – 10.32.127.254 | 10.32.127.255 |
| 9 | 10.32.128.0/20 | 10.32.128.1 – 10.32.143.254 | 10.32.143.255 |
| 10 | 10.32.144.0/20 | 10.32.144.1 – 10.32.159.254 | 10.32.159.255 |
| 11 | 10.32.160.0/20 | 10.32.160.1 – 10.32.175.254 | 10.32.175.255 |
| 12 | 10.32.176.0/20 | 10.32.176.1 – 10.32.191.254 | 10.32.191.255 |
| 13 | 10.32.192.0/20 | 10.32.192.1 – 10.32.207.254 | 10.32.207.255 |
| 14 | 10.32.208.0/20 | 10.32.208.1 – 10.32.223.254 | 10.32.223.255 |
| 15 | 10.32.224.0/20 | 10.32.224.1 – 10.32.239.254 | 10.32.239.255 |
| 16 | 10.32.240.0/20 | 10.32.240.1 – 10.32.255.254 | 10.32.255.255 |
| 17 | 10.33.0.0/20 | 10.33.0.1 – 10.33.15.254 | 10.33.15.255 |
| 18 | 10.33.16.0/20 | 10.33.16.1 – 10.33.31.254 | 10.33.31.255 |
| 19 | 10.33.32.0/20 | 10.33.32.1 – 10.33.47.254 | 10.33.47.255 |
| 20 | 10.33.48.0/20 | 10.33.48.1 – 10.33.63.254 | 10.33.63.255 |
| 21 | 10.33.64.0/20 | 10.33.64.1 – 10.33.79.254 | 10.33.79.255 |
| 22 | 10.33.80.0/20 | 10.33.80.1 – 10.33.95.254 | 10.33.95.255 |
| 23 | 10.33.96.0/20 | 10.33.96.1 – 10.33.111.254 | 10.33.111.255 |
| 24 | 10.33.112.0/20 | 10.33.112.1 – 10.33.127.254 | 10.33.127.255 |
| 25 | 10.33.128.0/20 | 10.33.128.1 – 10.33.143.254 | 10.33.143.255 |
| 26 | 10.33.144.0/20 | 10.33.144.1 – 10.33.159.254 | 10.33.159.255 |
| 27 | 10.33.160.0/20 | 10.33.160.1 – 10.33.175.254 | 10.33.175.255 |
| 28 | 10.33.176.0/20 | 10.33.176.1 – 10.33.191.254 | 10.33.191.255 |
| 29 | 10.33.192.0/20 | 10.33.192.1 – 10.33.207.254 | 10.33.207.255 |
| 30 | 10.33.208.0/20 | 10.33.208.1 – 10.33.223.254 | 10.33.223.255 |
| 31 | 10.33.224.0/20 | 10.33.224.1 – 10.33.239.254 | 10.33.239.255 |
| 32 | 10.33.240.0/20 | 10.33.240.1 – 10.33.255.254 | 10.33.255.255 |
| 33 | 10.34.0.0/20 | 10.34.0.1 – 10.34.15.254 | 10.34.15.255 |
| 34 | 10.34.16.0/20 | 10.34.16.1 – 10.34.31.254 | 10.34.31.255 |
| 35 | 10.34.32.0/20 | 10.34.32.1 – 10.34.47.254 | 10.34.47.255 |
| 36 | 10.34.48.0/20 | 10.34.48.1 – 10.34.63.254 | 10.34.63.255 |
| 37 | 10.34.64.0/20 | 10.34.64.1 – 10.34.79.254 | 10.34.79.255 |
| 38 | 10.34.80.0/20 | 10.34.80.1 – 10.34.95.254 | 10.34.95.255 |
| 39 | 10.34.96.0/20 | 10.34.96.1 – 10.34.111.254 | 10.34.111.255 |
| 40 | 10.34.112.0/20 | 10.34.112.1 – 10.34.127.254 | 10.34.127.255 |
| 41 | 10.34.128.0/20 | 10.34.128.1 – 10.34.143.254 | 10.34.143.255 |
| 42 | 10.34.144.0/20 | 10.34.144.1 – 10.34.159.254 | 10.34.159.255 |
| 43 | 10.34.160.0/20 | 10.34.160.1 – 10.34.175.254 | 10.34.175.255 |
| 44 | 10.34.176.0/20 | 10.34.176.1 – 10.34.191.254 | 10.34.191.255 |
| 45 | 10.34.192.0/20 | 10.34.192.1 – 10.34.207.254 | 10.34.207.255 |
| 46 | 10.34.208.0/20 | 10.34.208.1 – 10.34.223.254 | 10.34.223.255 |
| 47 | 10.34.224.0/20 | 10.34.224.1 – 10.34.239.254 | 10.34.239.255 |
| 48 | 10.34.240.0/20 | 10.34.240.1 – 10.34.255.254 | 10.34.255.255 |
| 49 | 10.35.0.0/20 | 10.35.0.1 – 10.35.15.254 | 10.35.15.255 |
| 50 | 10.35.16.0/20 | 10.35.16.1 – 10.35.31.254 | 10.35.31.255 |
| 51 | 10.35.32.0/20 | 10.35.32.1 – 10.35.47.254 | 10.35.47.255 |
| 52 | 10.35.48.0/20 | 10.35.48.1 – 10.35.63.254 | 10.35.63.255 |
| 53 | 10.35.64.0/20 | 10.35.64.1 – 10.35.79.254 | 10.35.79.255 |
| 54 | 10.35.80.0/20 | 10.35.80.1 – 10.35.95.254 | 10.35.95.255 |
| 55 | 10.35.96.0/20 | 10.35.96.1 – 10.35.111.254 | 10.35.111.255 |
| 56 | 10.35.112.0/20 | 10.35.112.1 – 10.35.127.254 | 10.35.127.255 |
| 57 | 10.35.128.0/20 | 10.35.128.1 – 10.35.143.254 | 10.35.143.255 |
| 58 | 10.35.144.0/20 | 10.35.144.1 – 10.35.159.254 | 10.35.159.255 |
| 59 | 10.35.160.0/20 | 10.35.160.1 – 10.35.175.254 | 10.35.175.255 |
| 60 | 10.35.176.0/20 | 10.35.176.1 – 10.35.191.254 | 10.35.191.255 |
| 61 | 10.35.192.0/20 | 10.35.192.1 – 10.35.207.254 | 10.35.207.255 |
| 62 | 10.35.208.0/20 | 10.35.208.1 – 10.35.223.254 | 10.35.223.255 |
| 63 | 10.35.224.0/20 | 10.35.224.1 – 10.35.239.254 | 10.35.239.255 |
| 64 | 10.35.240.0/20 | 10.35.240.1 – 10.35.255.254 | 10.35.255.255 |
| 65 | 10.36.0.0/20 | 10.36.0.1 – 10.36.15.254 | 10.36.15.255 |
| 66 | 10.36.16.0/20 | 10.36.16.1 – 10.36.31.254 | 10.36.31.255 |
| 67 | 10.36.32.0/20 | 10.36.32.1 – 10.36.47.254 | 10.36.47.255 |
| 68 | 10.36.48.0/20 | 10.36.48.1 – 10.36.63.254 | 10.36.63.255 |
| 69 | 10.36.64.0/20 | 10.36.64.1 – 10.36.79.254 | 10.36.79.255 |
| 70 | 10.36.80.0/20 | 10.36.80.1 – 10.36.95.254 | 10.36.95.255 |
| 71 | 10.36.96.0/20 | 10.36.96.1 – 10.36.111.254 | 10.36.111.255 |
| 72 | 10.36.112.0/20 | 10.36.112.1 – 10.36.127.254 | 10.36.127.255 |
| 73 | 10.36.128.0/20 | 10.36.128.1 – 10.36.143.254 | 10.36.143.255 |
| 74 | 10.36.144.0/20 | 10.36.144.1 – 10.36.159.254 | 10.36.159.255 |
| 75 | 10.36.160.0/20 | 10.36.160.1 – 10.36.175.254 | 10.36.175.255 |
| 76 | 10.36.176.0/20 | 10.36.176.1 – 10.36.191.254 | 10.36.191.255 |
| 77 | 10.36.192.0/20 | 10.36.192.1 – 10.36.207.254 | 10.36.207.255 |
| 78 | 10.36.208.0/20 | 10.36.208.1 – 10.36.223.254 | 10.36.223.255 |
| 79 | 10.36.224.0/20 | 10.36.224.1 – 10.36.239.254 | 10.36.239.255 |
| 80 | 10.36.240.0/20 | 10.36.240.1 – 10.36.255.254 | 10.36.255.255 |
| 81 | 10.37.0.0/20 | 10.37.0.1 – 10.37.15.254 | 10.37.15.255 |
| 82 | 10.37.16.0/20 | 10.37.16.1 – 10.37.31.254 | 10.37.31.255 |
| 83 | 10.37.32.0/20 | 10.37.32.1 – 10.37.47.254 | 10.37.47.255 |
| 84 | 10.37.48.0/20 | 10.37.48.1 – 10.37.63.254 | 10.37.63.255 |
| 85 | 10.37.64.0/20 | 10.37.64.1 – 10.37.79.254 | 10.37.79.255 |
| 86 | 10.37.80.0/20 | 10.37.80.1 – 10.37.95.254 | 10.37.95.255 |
| 87 | 10.37.96.0/20 | 10.37.96.1 – 10.37.111.254 | 10.37.111.255 |
| 88 | 10.37.112.0/20 | 10.37.112.1 – 10.37.127.254 | 10.37.127.255 |
| 89 | 10.37.128.0/20 | 10.37.128.1 – 10.37.143.254 | 10.37.143.255 |
| 90 | 10.37.144.0/20 | 10.37.144.1 – 10.37.159.254 | 10.37.159.255 |
| 91 | 10.37.160.0/20 | 10.37.160.1 – 10.37.175.254 | 10.37.175.255 |
| 92 | 10.37.176.0/20 | 10.37.176.1 – 10.37.191.254 | 10.37.191.255 |
| 93 | 10.37.192.0/20 | 10.37.192.1 – 10.37.207.254 | 10.37.207.255 |
| 94 | 10.37.208.0/20 | 10.37.208.1 – 10.37.223.254 | 10.37.223.255 |
| 95 | 10.37.224.0/20 | 10.37.224.1 – 10.37.239.254 | 10.37.239.255 |
| 96 | 10.37.240.0/20 | 10.37.240.1 – 10.37.255.254 | 10.37.255.255 |
| 97 | 10.38.0.0/20 | 10.38.0.1 – 10.38.15.254 | 10.38.15.255 |
| 98 | 10.38.16.0/20 | 10.38.16.1 – 10.38.31.254 | 10.38.31.255 |
| 99 | 10.38.32.0/20 | 10.38.32.1 – 10.38.47.254 | 10.38.47.255 |
| 100 | 10.38.48.0/20 | 10.38.48.1 – 10.38.63.254 | 10.38.63.255 |
| 101 | 10.38.64.0/20 | 10.38.64.1 – 10.38.79.254 | 10.38.79.255 |
| 102 | 10.38.80.0/20 | 10.38.80.1 – 10.38.95.254 | 10.38.95.255 |
| 103 | 10.38.96.0/20 | 10.38.96.1 – 10.38.111.254 | 10.38.111.255 |
| 104 | 10.38.112.0/20 | 10.38.112.1 – 10.38.127.254 | 10.38.127.255 |
| 105 | 10.38.128.0/20 | 10.38.128.1 – 10.38.143.254 | 10.38.143.255 |
| 106 | 10.38.144.0/20 | 10.38.144.1 – 10.38.159.254 | 10.38.159.255 |
| 107 | 10.38.160.0/20 | 10.38.160.1 – 10.38.175.254 | 10.38.175.255 |
| 108 | 10.38.176.0/20 | 10.38.176.1 – 10.38.191.254 | 10.38.191.255 |
| 109 | 10.38.192.0/20 | 10.38.192.1 – 10.38.207.254 | 10.38.207.255 |
| 110 | 10.38.208.0/20 | 10.38.208.1 – 10.38.223.254 | 10.38.223.255 |
| 111 | 10.38.224.0/20 | 10.38.224.1 – 10.38.239.254 | 10.38.239.255 |
| 112 | 10.38.240.0/20 | 10.38.240.1 – 10.38.255.254 | 10.38.255.255 |
| 113 | 10.39.0.0/20 | 10.39.0.1 – 10.39.15.254 | 10.39.15.255 |
| 114 | 10.39.16.0/20 | 10.39.16.1 – 10.39.31.254 | 10.39.31.255 |
| 115 | 10.39.32.0/20 | 10.39.32.1 – 10.39.47.254 | 10.39.47.255 |
| 116 | 10.39.48.0/20 | 10.39.48.1 – 10.39.63.254 | 10.39.63.255 |
| 117 | 10.39.64.0/20 | 10.39.64.1 – 10.39.79.254 | 10.39.79.255 |
| 118 | 10.39.80.0/20 | 10.39.80.1 – 10.39.95.254 | 10.39.95.255 |
| 119 | 10.39.96.0/20 | 10.39.96.1 – 10.39.111.254 | 10.39.111.255 |
| 120 | 10.39.112.0/20 | 10.39.112.1 – 10.39.127.254 | 10.39.127.255 |
| 121 | 10.39.128.0/20 | 10.39.128.1 – 10.39.143.254 | 10.39.143.255 |
| 122 | 10.39.144.0/20 | 10.39.144.1 – 10.39.159.254 | 10.39.159.255 |
| 123 | 10.39.160.0/20 | 10.39.160.1 – 10.39.175.254 | 10.39.175.255 |
| 124 | 10.39.176.0/20 | 10.39.176.1 – 10.39.191.254 | 10.39.191.255 |
| 125 | 10.39.192.0/20 | 10.39.192.1 – 10.39.207.254 | 10.39.207.255 |
| 126 | 10.39.208.0/20 | 10.39.208.1 – 10.39.223.254 | 10.39.223.255 |
| 127 | 10.39.224.0/20 | 10.39.224.1 – 10.39.239.254 | 10.39.239.255 |
| 128 | 10.39.240.0/20 | 10.39.240.1 – 10.39.255.254 | 10.39.255.255 |
01 / table
IPv4 CIDR prefix table.
Click a prefix longer than your network to split it into subnets.
| prefix | subnet mask | addresses | hosts | in your /13 |
|---|---|---|---|---|
| /0 | 0.0.0.0 | 4,294,967,296 | 4,294,967,294 | - |
| /1 | 128.0.0.0 | 2,147,483,648 | 2,147,483,646 | - |
| /2 | 192.0.0.0 | 1,073,741,824 | 1,073,741,822 | - |
| /3 | 224.0.0.0 | 536,870,912 | 536,870,910 | - |
| /4 | 240.0.0.0 | 268,435,456 | 268,435,454 | - |
| /5 | 248.0.0.0 | 134,217,728 | 134,217,726 | - |
| /6 | 252.0.0.0 | 67,108,864 | 67,108,862 | - |
| /7 | 254.0.0.0 | 33,554,432 | 33,554,430 | - |
| /8 | 255.0.0.0 | 16,777,216 | 16,777,214 | - |
| /9 | 255.128.0.0 | 8,388,608 | 8,388,606 | - |
| /10 | 255.192.0.0 | 4,194,304 | 4,194,302 | - |
| /11 | 255.224.0.0 | 2,097,152 | 2,097,150 | - |
| /12 | 255.240.0.0 | 1,048,576 | 1,048,574 | - |
| /13 | 255.248.0.0 | 524,288 | 524,286 | 1 |
| /14 | 255.252.0.0 | 262,144 | 262,142 | 2 split → |
| /15 | 255.254.0.0 | 131,072 | 131,070 | 4 split → |
| /16 | 255.255.0.0 | 65,536 | 65,534 | 8 split → |
| /17 | 255.255.128.0 | 32,768 | 32,766 | 16 split → |
| /18 | 255.255.192.0 | 16,384 | 16,382 | 32 split → |
| /19 | 255.255.224.0 | 8,192 | 8,190 | 64 split → |
| /20 | 255.255.240.0 | 4,096 | 4,094 | 128 split → |
| /21 | 255.255.248.0 | 2,048 | 2,046 | 256 split → |
| /22 | 255.255.252.0 | 1,024 | 1,022 | 512 split → |
| /23 | 255.255.254.0 | 512 | 510 | 1,024 split → |
| /24 | 255.255.255.0 | 256 | 254 | 2,048 split → |
| /25 | 255.255.255.128 | 128 | 126 | 4,096 split → |
| /26 | 255.255.255.192 | 64 | 62 | 8,192 split → |
| /27 | 255.255.255.224 | 32 | 30 | 16,384 split → |
| /28 | 255.255.255.240 | 16 | 14 | 32,768 split → |
| /29 | 255.255.255.248 | 8 | 6 | 65,536 split → |
| /30 | 255.255.255.252 | 4 | 2 | 131,072 split → |
| /31 | 255.255.255.254 | 2 | 2 | 262,144 split → |
| /32 | 255.255.255.255 | 1 | 1 | 524,288 split → |
02 / faq
About this calculator.
How do I use this subnet calculator?
▼
Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.
Why are usable hosts always 2 fewer?
▼
The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.
Can I use it from a terminal?
▼
Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.